body {
    background: #000;
    background-image: linear-gradient(45deg, #020031, #6D3353);
}

div.big {
    width: 1000px;
    margin: 0px auto;

    position: fixed;
    top: 50%;
    margin-top: -250px;
    margin-left: 250px;
}

div.team {
    width: 430px;
    height: 430px;
    float: left;
    border-radius: 10%;
    background: #1FA67A;
    box-shadow: 20 12px 3px rgba(0, 0, 0, 0.3);
    margin-left: 50px;
    font-family: '微软雅黑';
    border: solid 10px #25113C;
}

div.team:hover {
    background: red;
}

div.team a {
    font-size: 130px;
    text-align: center;
    line-height: 400px;
    color: #ddd;
    display: block;
    font-weight: bold;
}

h1 {
    font-size: 55px;
    text-align: center;
    color: #fff;
    padding-top: 100px;
}

div#login {
    margin: 0px auto;
    width: 600px;
    height: 45px;
}

table {
    background: #ffffff;
}

table td {
    height: 55px;
}

div#copyright {
    color: #fff;
    text-align: center;
    position: fixed;
    bottom: 20px;
    width: 100%;
    font-size: 16px;
    color: #dcdcdc;
    font-family: '微软雅黑';
}
h2{
    font-size:55px;
    color:#fff;
    font-weight:bold;
    margin:50px auto;
    text-align: center;
    font-family: '微软雅黑';
}